18118932368 has 20 divisors (see below), whose sum is σ = 35229487728. Its totient is φ = 9027451680.

The previous prime is 18118932343. The next prime is 18118932371. The reversal of 18118932368 is 86323981181.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1996238 + ... + 2005293.

Almost surely, 2^18118932368 is an apocalyptic number.

It is an amenable number.

18118932368 is a deficient number, since it is larger than the sum of its proper divisors (17110555360).

18118932368 is a wasteful number, since it uses less digits than its factorization.

18118932368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4001822 (or 4001816 counting only the distinct ones).

The product of its digits is 497664, while the sum is 50.

The spelling of 18118932368 in words is "eighteen billion, one hundred eighteen million, nine hundred thirty-two thousand, three hundred sixty-eight".